I have assumed (wihout having further proof) that she wasthe child baptised to Lenert Geens and his wife Mechtelt deKeijser on 15th September 1626 in the Nieuwe Kerk Amsterdam,given that she said she was born in Amsterdam and that shewas aged 36 in August 1666 when she married Hendrik Reijnsteat the Cape, plus the fact that she had several times named adaughter of her own Magtelt.